A Low-Profile, Wideband Antenna With Vertically Polarized Directional Radiation

Ghaemi, Kasra; Behdad, Nader

doi:10.1109/lawp.2015.2493450

Cited by 13 publications

(7 citation statements)

References 9 publications

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“…The antenna gain, and communication range has been improved by the developed antenna systems. In study [14], antenna directivity has been controlled by beam steering through the reconfigurable mechanism. The beam steering technique used in the reported work is very useful for improving WSN security and network performance.…”

Section: Introductionmentioning

confidence: 99%

Meta-surface (frequency selective surface) loaded high gain directional antenna systems for ultra-wideband applications

AL-shamili

Sharma²

2023

IJECE

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<span lang="EN-US">In this work, a meta-surface (frequency selective surface) loaded high gain directional antenna system is presented. The antenna system is developed using ultra-wideband (UWB) antenna element and meta-surface reflector. The UWB antenna element is designed and simulated without meta-surface reflector. The UWB antenna element has poor impedance bandwidth and directivity. A meta-surface is created using unit cell and equal in the size of the antenna substrate. The meta-surface is placed over the UWB antenna element at optimized height (H=30 mm). The impedance bandwidth, directivity and gain of the proposed antenna are improved by the meta-surface reflector. The proposed antenna is fabricated and experimentally validated by the comparison of the simulated and measured results. The antenna has 3 to 6 GHz wide impedance bandwidth, more than 5 dBi gain and maximum 4.6 dBi directivity at 3.5 GHz frequency. Performance of the proposed antenna is also compared with existing carried out work. Comparatively, the proposed antenna with high directivity is most suitable for IEEE 802.15.4a UWB wireless sensor network (WSN) security application.</span>

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Section: Introductionmentioning

confidence: 99%

Meta-surface (frequency selective surface) loaded high gain directional antenna systems for ultra-wideband applications

AL-shamili

Sharma²

2023

IJECE

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“…In contrast to previous works, where researchers have proposed numerous wide-band antennas with omnidirectional radiations [23,24], the proposed design is a wide-band unidirectional antenna with scanning loss of only 0.3 dB throughout the bandwidth. In previous works like [25], a wideband antenna with directional radiation, in just 1 GHz of antenna bandwidth, the antenna suffers from 1.1 dB scanning loss. The antenna design also lacks the beam scanning ability.…”

Section: Introductionmentioning

confidence: 99%

Wide-Band Directional Cavity Antenna With Low Scanning Loss for Wlan

Swapna¹,

Karthikeya²,

Koul³

et al. 2022

PIER C

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In this paper, a wide-band cavity antenna with low scanning loss for 20% antenna bandwidth as well as having a wide 20% 1-dB gain bandwidth over the antenna beam scanning angle is proposed. The antenna operates in the 5 GHz band of IEEE 802.11 ac wireless local area network (WLAN) applications. A beam scanning of 20 • is demonstrated by varying the height of a slider within the antenna cavity. The broadside peak gain of 9.6 dBi is maintained for 20% of the antenna bandwidth with a gain reduction of only 0.3 dB throughout its operating frequency range. Besides, the scanning loss suffered by the antenna when scanning from the broadside to the maximum scanned angle is only 0.8 dB. The proposed scan performance is verified for a single element antenna and a two-element antenna array.

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“…In [4], double reflecting floors are introduced in the dipole antenna to obtain stable radiation patterns and relatively high gains in the upper frequency band. For the needs of specific systems, some antennas have the characteristics of being low profile, compact and wideband, and have stably directional radiation [5][6][7]. A monopole antenna with a fork-shaped slot electromagnetic bandgap (EBG) structure as a reflector is proposed in [5].…”

Section: Introductionmentioning

confidence: 99%

“…In [6], the antenna is based on a modified Vivaldi antenna and characterized by a three-dimensionally bended structure, which performs a stable directional radiation pattern on wideband and is of compact size. In [7], four bent diamond-shaped half-loops are placed on the ground plane to form a directional antenna, and half-loops are fed by a feed network to realize a cardioid directional radiation pattern.…”

Section: Introductionmentioning

confidence: 99%

A Low Profile Dual-Band High Gain Directional Antenna for Anti-Interference WLAN Station Applications

et al. 2021

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This paper presents a low-profile dual-band antenna with directional radiation characteristics for wireless local area network (WLAN) applications. The proposed directional antenna is composed of a coupling microstrip line, two F-shaped strips, two rectangular strips, and a defected ground plane. The measured impedance bandwidth of the proposed antenna is 180 MHz (2.33–2.51 GHz) and 830 MHz (5.09–5.92 GHz), which can cover Institute of Electrical and Electronic Engineers (IEEE) 802.11 a/b/g frequency bands. The dual-band antenna exhibits a desirable directional radiation patterns in the vertical and horizontal planes with the peak gain of 6.55 dBi in the lower frequency band and 8.1 dBi in the higher frequency band. The measured antenna efficiency is 70% at 2.4 GHz and 84.5% at 5.5 GHz. The proposed dual-band WLAN station antenna is designed on a FR4 substrate with overall dimensions of 69 mm × 50 mm × 1.6 mm.

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A Low-Profile, Wideband Antenna With Vertically Polarized Directional Radiation

Cited by 13 publications

References 9 publications

Meta-surface (frequency selective surface) loaded high gain directional antenna systems for ultra-wideband applications

Meta-surface (frequency selective surface) loaded high gain directional antenna systems for ultra-wideband applications

Wide-Band Directional Cavity Antenna With Low Scanning Loss for Wlan

A Low Profile Dual-Band High Gain Directional Antenna for Anti-Interference WLAN Station Applications

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